Dear friends and readers,  It is my distinct pleasure and honor to introduce this new journal issue to you not only because I know the work of most of the authors but also because I believe it is extremely important to disseminate its results. The papers published in this journal issue raise interesting and stimulating insights, and I can only hope that they will attract more attention of the specialists and wider public to social pediatrics as a field and to community centers which practice it. This particular issue represents the work of the key specialists from the Foundation of Dr. Julien in Montreal, Canada. You will learn about the astonishing results which were achieved in their long-term professional public service to children and families living in very poor neighborhoods of the city. You will also become aware of the founding principles and concepts of the work of Dr. Julien and his committed colleague and wife Hélène (Sioui) Trudel. One of the projects of particular importance and attraction is their Music Garage which provides access to collective practice of music in youth orchestras and which has changed the lives of hundreds of participants. No wonder, Janusz Korczak Association of Canada calls Dr. Julien and Ms. Trudel Canadian Korczaks, they truly deserve this high title.